Front bumper for an automobile



FIG. 1 is a perspective view of a front bumper for an automobile showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a right-side view thereof, the left-side view being a mirror image.

The rear view is not part of the claimed design. 

The ornamental design for a front bumper for an automobile, as shown and described. 